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Dark Matter Substructure Detection Using Spatially Resolved Spectroscopy of Lensed Dusty Galaxies
Yashar Hezaveh, Neal Dalal, Gilbert Holder +4
We investigate how strong lensing of dusty, star-forming galaxies by foreground galaxies can be used as a probe of dark matter halo substructure. We find that spatially resolved sp…
Dense Molecular Gas: A Sensitive Probe of Stellar Feedback Models
Philip F. Hopkins, Desika Narayanan, Norman Murray +1
We show that the mass fraction of GMC gas (n>100 cm^-3) in dense (n>>10^4 cm^-3) star-forming clumps, observable in dense molecular tracers (L_HCN/L_CO(1-0)), is a sensitive probe…
Variations in the Galactic star formation rate and density thresholds for star formation
S. N. Longmore, J. Bally, L. Testi +11
The conversion of gas into stars is a fundamental process in astrophysics and cosmology. Stars are known to form from the gravitational collapse of dense clumps in interstellar mol…
A Giant Metrewave Radio Telescope/Chandra view of IRAS 09104+4109: A type 2 QSO in a cooling flow
Ewan O'Sullivan, Simona Giacintucci, Arif Babul +8
IRAS 09104+4109 is a rare example of a dust enshrouded type 2 QSO in the centre of a cool-core galaxy cluster. Previous observations of this z=0.44 system showed that as well as po…
Star Formation in Galaxy Mergers with Realistic Models of Stellar Feedback & the Interstellar Medium
Philip F. Hopkins, Thomas J. Cox, Lars Hernquist +3
We use simulations with realistic models for stellar feedback to study galaxy mergers. These high resolution (1 pc) simulations follow formation and destruction of individual GMCs…
Milky Way Star Forming Complexes and the Turbulent Motion of the Galaxy's Molecular Gas
E. J. Lee, N. Murray, M. Rahman
We analyze Spitzer GLIMPSE, MSX, and WMAP images of the Milky Way to identify 8 micron and free-free sources in the Galaxy. Seventy-two of the eighty-eight WMAP sources have covera…